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Mercy Class Hospital Ship

Two hospital ships owned and operated by Military Sealift Command provide emergency, on-site care for U.S. combatant forces deployed in war or other operations. The hospital ships' secondary mission is to provide full hospital services to support U.S. disaster relief and humanitarian operations worldwide.

Mercy Class Hospital Ship Copyright © Mass Communication Specialist 3rd Class Huey D. Younger Jr., U.S. Navy


In active service


Originally built by: National Steel and Shipbuilding Co. - San Diego, California, USA


Both Mercy Class hospital ships are converted San Clemente-class super tankers. These tankers were built by the National Steel and Shipbuilding Co. in the years between 1974 and 1978. Originally, USNS Mercy was called SS Worth, while USNS Comfort was called the SS Rose City.


18-65 Civil Service Mariners
58-1215 Naval Medical Personnel


1 helicopter (optional)


Length: 272.49 meters 894 feet
Beam: 32.19 meters 105.6 feet
Displacement: 70 473.2 metric tons (at full load) 69 360 long tons (at full load)
Propulsion: two GE turbines, two boilers, one shaft
Performance: 24 500 shaft horsepower
Speed: 17.5 knots » 32,41 kilometers per hour ~20 miles per hour

Ship list

Hull number Ship name Commissioned Decommissioned Status
T-AH 19 USNS Mercy 1986.11.08. - In active service
T-AH 20 USNS Comfort 1987.12.01. - In active service